KABUL, June 3 (Xinhua) -- Four people were killed and five others wounded in a bomb attack targeting a mini-bus in western part of Kabul, capital of Afghanistan, on Thursday, the third bomb explosion hitting public transport buses within the week, the capital police confirmed.
"The blast occurred in Pul-i-Sokhta locality. The number of death toll may change," Kabul police spokesman Ferdaus Faramarz told reporters via a text message, citing initial information.
One sedan also caught fire and a fire-fighting unit of Kabul police was responding to the incident, he said.
Earlier in the day, four civilians were killed and four others wounded, and a minibus was destroyed when a bomb hit the vehicle in the same district.
No group has claimed responsibility for the attack so far.
On Tuesday, eight civilians were killed and 14 others wounded in twin blasts hitting two public transport buses in span of short time in the same neighborhood. Taliban militants denied involvement in the Tuesday's incident.